Type Uniform polyhedron Edges 27 Vertex configuration /2.4.4 | Faces 2 enneagrams
9 squares Vertices 18 Wythoff symbol 2 9/2 | 2 | |
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In geometry, the enneagrammic prism is a nonconvex prisms formed by squares sides and two regular star polygon caps. There are two forms based on the two types of enneagrams: {9/2} and {9/4}.
References
Enneagrammic prism Wikipedia(Text) CC BY-SA